1Dredge sebaceous duct, reduce and control oil secretion, improve hair loss. 2Effectively kill hair pathogens, in the aid of drugs can kill fungi and mites concealed in the hair follicle. 3Help to improve blood circulation, so that oxygen and nutrients sent to the hair follicle and achieve hair loss preventing effect. 4Accelerate the blood circulation of scalp, improve the regeneration ability of collagen fiber and promote metabolism. 5The 650 NM laser wavelength penetrates the hair follicle and is absorbed by hemoglobin in the hair follicle, activating the hair follicle.